use radio mix playlists as recommendations (#275)

Author: munishkhatri720

README.md

@@ -828,6 +828,10 @@ playerManager.registerSourceManager(new YTDLPSourceManager("path/to/yt-dlp"));
 * `spsearch:animals architects` (check out [Spotify Search Docs](https://developer.spotify.com/documentation/web-api/reference/search) for advanced search queries like isrc & co)
 * `sprec:seed_artists=3ZztVuWxHzNpl0THurTFCv,4MzJMcHQBl9SIYSjwWn8QW&seed_genres=metalcore&seed_tracks=5ofoB8PFmocBXFBEWVb6Vz,6I5zXzSDByTEmYZ7ePVQeB`
   (only works in [Extended quota mode](https://developer.spotify.com/documentation/web-api/concepts/quota-modes#extended-quota-mode) or with anonymous tokens, check out [Spotify Recommendations Docs](https://developer.spotify.com/documentation/web-api/reference/get-recommendations) for the full query parameter list)
+* `sprec:mix:artist:0gxyHStUsqpMadRV0Di1Qt`
+* `sprec:mix:track:4PTG3Z6ehGkBFwjybzWkR8`
+* `sprec:mix:album:7t0YTcJ3HsalOTIE6XzQYo`
+* `sprec:mix:isrc:GBARL9300135`
 * https://open.spotify.com/track/0eG08cBeKk0mzykKjw4hcQ
 * https://open.spotify.com/album/7qemUq4n71awwVPOaX7jw4
 * https://open.spotify.com/playlist/7HAO9R9v203gkaPAgknOMp (playlists can include local files if you enabled this via: `plugins.lavasrc.spotify.localFiles: true`. Please note `uri` & `isrc` will be `null` & `identifier` will be `"local"`)

main/src/main/java/com/github/topi314/lavasrc/mirror/DefaultMirroringAudioTrackResolver.java

@@ -38,7 +38,7 @@ public AudioItem apply(MirroringAudioTrack mirroringAudioTrack) {
 
 			if (provider.contains(MirroringAudioSourceManager.ISRC_PATTERN)) {
 				if (mirroringAudioTrack.getInfo().isrc != null && !mirroringAudioTrack.getInfo().isrc.isEmpty()) {
-					provider = provider.replace(MirroringAudioSourceManager.ISRC_PATTERN, mirroringAudioTrack.getInfo().isrc);
+					provider = provider.replace(MirroringAudioSourceManager.ISRC_PATTERN, mirroringAudioTrack.getInfo().isrc.replace("-", ""));
 				} else {
 					log.debug("Ignoring identifier \"{}\" because this track does not have an ISRC!", provider);
 					continue;

main/src/main/java/com/github/topi314/lavasrc/spotify/SpotifySourceManager.java

@@ -38,12 +38,14 @@
 import java.util.Set;
 import java.util.function.Consumer;
 import java.util.function.Function;
+import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
 
 public class SpotifySourceManager extends MirroringAudioSourceManager implements HttpConfigurable, AudioSearchManager, AudioLyricsManager {
 
 	public static final Pattern URL_PATTERN = Pattern.compile("(https?://)(www\\.)?open\\.spotify\\.com/((?<region>[a-zA-Z-]+)/)?(user/(?<user>[a-zA-Z0-9-_]+)/)?(?<type>track|album|playlist|artist)/(?<identifier>[a-zA-Z0-9-_]+)");
+	public static final Pattern RADIO_MIX_QUERY_PATTERN = Pattern.compile("mix:(?<seedType>album|artist|track|isrc):(?<seed>[a-zA-Z0-9-_]+)");
 	public static final String SEARCH_PREFIX = "spsearch:";
 	public static final String RECOMMENDATIONS_PREFIX = "sprec:";
 	public static final String PREVIEW_PREFIX = "spprev:";
@@ -65,6 +67,7 @@ public class SpotifySourceManager extends MirroringAudioSourceManager implements
 	private boolean localFiles;
 	private boolean resolveArtistsInSearch = true;
 	private boolean preferAnonymousToken = false;
+	
 
 	public SpotifySourceManager(String[] providers, String clientId, String clientSecret, String countryCode, AudioPlayerManager audioPlayerManager) {
 		this(clientId, clientSecret, null, countryCode, unused -> audioPlayerManager, new DefaultMirroringAudioTrackResolver(providers));
@@ -83,7 +86,7 @@ public SpotifySourceManager(String clientId, String clientSecret, String country
 	}
 
 	public SpotifySourceManager(String clientId, String clientSecret, String spDc, String countryCode, Function<Void, AudioPlayerManager> audioPlayerManager, MirroringAudioTrackResolver mirroringAudioTrackResolver) {
-		this(clientId, clientSecret, false, spDc, countryCode, audioPlayerManager, mirroringAudioTrackResolver);
+		this(clientId, clientSecret, false , spDc, countryCode, audioPlayerManager, mirroringAudioTrackResolver);
 	}
 
 	public SpotifySourceManager(String clientId, String clientSecret, boolean preferAnonymousToken, String spDc, String countryCode, Function<Void, AudioPlayerManager> audioPlayerManager, MirroringAudioTrackResolver mirroringAudioTrackResolver) {
@@ -376,6 +379,36 @@ public AudioItem getSearch(String query, boolean preview) throws IOException {
 	}
 
 	public AudioItem getRecommendations(String query, boolean preview) throws IOException {
+		Matcher matcher = RADIO_MIX_QUERY_PATTERN.matcher(query);
+		if (matcher.find()) {
+			String seedType = matcher.group("seedType");
+			String seed = matcher.group("seed");
+			if (seedType.equals("isrc")) {
+				AudioItem item = this.getSearch("isrc:" + seed, preview);
+				if (item == AudioReference.NO_TRACK) {
+					return AudioReference.NO_TRACK;
+				}
+				if (item instanceof AudioTrack) {
+					seed = ((AudioTrack) item).getIdentifier();
+					seedType = "track";
+				} else if (item instanceof AudioPlaylist) {
+					var playlist = (AudioPlaylist) item;
+					if (!playlist.getTracks().isEmpty()) {
+						seed = playlist.getTracks().get(0).getIdentifier();
+						seedType = "track";
+					} else {
+						return AudioReference.NO_TRACK;
+					}
+				}
+			}
+			JsonBrowser rjson = this.getJson(CLIENT_API_BASE + "inspiredby-mix/v2/seed_to_playlist/spotify:" + seedType + ":" + seed + "?response-format=json", true, this.preferAnonymousToken);
+			JsonBrowser mediaItems = rjson.get("mediaItems");
+			if (mediaItems.isList() && mediaItems.values().size() > 0) {
+				String playlistId = mediaItems.index(0).get("uri").text().split(":")[2];
+				return this.getPlaylist(playlistId, preview);
+			}
+			
+		}
 		var json = this.getJson(API_BASE + "recommendations?" + query, false, false);
 		if (json == null || json.get("tracks").values().isEmpty()) {
 			return AudioReference.NO_TRACK;